EOS R5 Mark II issues with colors and corrupted images

[jasonleecs]

Hi,

Any R5M2 owner encountered a "layer" of additional/missing colour platter in your photo taken?

Initially, I encounter image preview issue where the camara states that the "current image cannot be previewed" on the camera but didn't thought much about as it was already night and I'm shooting the cuscus near the homestay. But things took a turn the next day when I'm shooting the bird of paradise. A quick preview on some of the images show symptom the night before and worst, photos with additional/missing colour platter.

As I continue to review the images, I noticed some of the images either have a tinge of colour, e.g. green, yellow, pink etc., either in in full or partial on the images.

Initially, I thought it could be due to the slower SanDisk UHS 2 SD card wasn't able to catch-up with the write speed that causes the problem. So, I removed the SD card and let the camera write to the faster Prograde CFExpress card with the sustainable write speed of 1300MB/s.

However, the issue persisted and even more ridiculous! I took the camera for a sunrise shoot one morning, instantly, the 1st shot encountered the problem describe above on the CFExpress card. Therefore, the theory of incapable card or heating is ruled out. 

Would like to hear from follow R5M2 owner if you've encountered such issues.

The camera config is as followed

Firmware v1.01 // Highlight tone priority D+2 on shooting the bird, and was disabled when shooting sunrise // Elec shutter for BOP @ H+ and Mech shutter for sunrise at single // SanDisk 256GB Extreme PRO SDXC UHS-II Memory Card with R=280MB, W=150MB // ProGrade Digital 1TB CFexpress Type B Memory Card (GOLD) with R=1700MB, R=1300MB

Thanks.

[Peter · Accepted solution]

The masked pixels are good to use to set the right black level or to reduce row noise. Black level 0 will give you the pale colour cast. Canon normally uses something around 512 at ISO 100 and something around 2048 at higher ISO. If you don't want to use the masked pixels to set the black level you can use the information from the Makernotes. It is often correct even if there are exceptions. DPP, Lightroom and DxO read the black level from the Makernotes. Here I have changed the Makernotes from 512, I think, to 0.

 

Using HTP 200 means that you are using ISO 100 under exposed 1 stop. The raw file will therefore be 1 stop darker. DPP then adds a tonecurve to make it brighter.

[Peter · Accepted solution]

Yes, corrupted. One of three embedded JPEG files corrupted too. This one is still okey but only low resolution. Extracted with Exiftool.

The blue pixels in the raw file are in the bad area hitting 16383. It means that they clip the highlights and do that even in the masked pixels. The value there should be 512.

[jasonleecs]

Thank you for the detail explanation Peter. Much appreciated, and I've also learn something thru this. ❤️

[Brendan1]

Hi,   Somewhat like the R52Aoo49.CR3 of Jasonleecs, all my CR3 files are washed out & have a pinkish border on the left side and across the top when looking at the file on my PC   It doesn't happen when viewing on the camera I have tried different branded branded cards - both Sd & CFexpress B   I have used various objects to photo & different camera settings, as well as resetting the camera & uploading update - didn't change my issue   I also rechecked my PC for updates as well as DPP   I have used these cards on other cameras that support these cards - taken photos & absolutely no issues opening on my PC - either DPP or straight from the card   All my other CR3 photos are flawless.   It's only RAW from the R5ii   The SD cards are also flawless with the R5ii for JPegs   Again - it's only the RAW files  I couldn't load raw files onto my Ipad - requires too much power.   The dealer was able to replicate this on their PC   The dealer has sent my camera back to Canon.   Also I've been online to Canon tech support - all been good but no solution at this stage.

[jasonleecs]

I've reported the issue to my local Canon support, and they have acknowledged the issue since they can reproduce the problem.

Their advice is not to use V60 SDXC for the time being until a remedy is available.

[Peter]

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@Brendan1 wrote:

Hi,   Somewhat like the R52Aoo49.CR3 of Jasonleecs, all my CR3 files are washed out & have a pinkish border on the left side and across the top when looking at the file on my PC   It doesn't happen when viewing on the camera I have tried different branded branded cards - both Sd & CFexpress B   I have used various objects to photo & different camera settings, as well as resetting the camera & uploading update - didn't change my issue   I also rechecked my PC for updates as well as DPP   I have used these cards on other cameras that support these cards - taken photos & absolutely no issues opening on my PC - either DPP or straight from the card   All my other CR3 photos are flawless.   It's only RAW from the R5ii   The SD cards are also flawless with the R5ii for JPegs   Again - it's only the RAW files  I couldn't load raw files onto my Ipad - requires too much power.   The dealer was able to replicate this on their PC   The dealer has sent my camera back to Canon.   Also I've been online to Canon tech support - all been good but no solution at this stage.

---

Sounds like the thing I already wrote about. Files from my 6D, 7D, 30D, 1Ds that in the raw file doesn't have any masked pixels or any black level offset, 300D, D30, D60.

My raw files are free to download from https://discuss.pixls.us/uploads/short-url/1h1CdZDLZFenDnimt5jMs5mPw5u.zip

With the right black level and crop + color look-up table:

[jasonleecs]

Hi Peter,

You may be right about the masked pixels based on the depth of your technical knowledge. But if shots show up in DPP with inconsistency or unreadable, users will take it as a issue with the camera/photos instead of something else.

Like my shot "R52A0049.CR3" it does appear washed out on FastStone, but unreadable in DPP 4.18, and underexposed by at least 2.5 stop in DPP 4.19 from the next shot with the same setting. To a normal user, this would be a problem with the camera.

BTW, what is the software you used, I would like to try it out to correct the black level correction.

Thanks. 

[jasonleecs]

Hi,

Canon Inc have revert with the cause of the phenomenon. It was cause by the SanDisk Extreme PRO® SDXC™ UHS-II V60 64, 128, and 256GB card

Please refer to this link if you're using SanDisk card; https://support-en.sandisk.com/app/answers/detailweb/a_id/52430

[Peter]

For CR3 files, darktable relays on LibRaw. Same as FastStone I suppose. LibRaw is released around once a year.

"Public snapshots are published every 9-18 months in the public GitHub repository."

It means that darktable out of the box doesn't support R5 II if you don't compile it with the R5 II changes. I haven't done it for R5 II. How to do here https://blog.pandainthecloud.de/2024/09/07/adding-new-camera-support-in-darktable-libraw-exiftool/

As a workaround you can just convert the CR3 files to DNG. Both Adobe DNG Converter and DNGLab support R5 II.

Highlight Tone Priority will often be under exposed if your software doesn't read the HTP tag and is able to compensate for it.

I am not at my computer right now, but latest release for DPP, is it 4.19.30 for Windows and 4.19.31 for OS X?

[rbnsncrs]

Hello, I have similar problem with similar memory cards. I was also planning to switch to the fast cfexpress  card but didn't make sense as these SD card speeds are for 6K&8K video, some raw photo file recording shouldn't be a problem.

For me like 1 in 100 photos are either color washed or like some part of the photo image is cut, like the legs of a person moved to the side such with different colors.

I also thought that I tried a lot of different settings as the camera is new. I switched to mechanical shutter at some point. I was wondering if it can be related with that so decided to make a research first. Either way feels a little weird as this is my third Canon digital camera and first time I'm experiencing such problem.

I only record raw and CR3 files by the way.

I'll try to understand Peter's solution. So the files are not damaged or anything, it's just a software problem?

[Peter]

First thing with a new card is to tick the low level format checkbox in the camera and hit Format. This will also reset the write speed to best performance.

Share some affected raw files and use a filehost like WeTransfer, Google Drive, Dropbox. Also tell us what software you use to view the raw files.

[jasonleecs]

Hi,

The problem you encountered does not matter is you used mechanical or E shutter. I highly suspect is a buffering problem as more cases I read around the web is encountered by owners using the V60 cards.

I believe when you say your SD card are for 6K&8K video, it should be a UHS-II V90 card. If it is not V90, it should not be capable enough to do 8K video. As I don't owned any V90 card, I can't confirm if there is any issue when capturing RAW with that. Nonetheless, there are UHS-II card that are only V60 capable, you can spot them easily on the label on the card itself.

For more differences between UHS-1 & 2, you can refer to the pic and technical data @ https://www.sdcard.org/developers/sd-standard-overview/bus-speed-default-speed-high-speed-uhs-sd-exp... & https://p1-tt.byteimg.com/origin/tos-cn-i-qvj2lq49k0/9d58668544d544b8835106d4e543eceb.jpg 

Nonetheless, my local Canon support have confirmed there is image recording issues with the V60 card since they are able to replicate the issues reported by me. They have suggest to use the CFE card for the time being prior to the a solution is available.

For you image corruption issue, I suggest you open it with the latest DPP software, as earlier version may encounter the same problem you face, e.g. photo that are washed out like "R52A0049.RAW" example on the start of the thread. Once I updated my DPP to 4.19.30.0, the wash out issue goes away, but the image have been underexposed by at least 2-stops as show below. 

Thus far, this is the only file with white washed out I open and edit to test if it is recoverable.  Whereas for other files that are not white washed out, those are fit to face the wrath of the delete key, such as those below. The files is not recoverable, even DPP can only show it with a BIG QUESTION mark. 

PS: If you used a V90 card and have the same issue, please let me know the brand and the card model. I'll like to feedback to Canon support on that.